a researcher is interested comparing quality of sleep between people who work overnight shifts and people who work day shifts. a sample of 50 day shift workers and 50 night shift workers are asked to complete a quality of sleep measure, which the researcher will treat as an interval scale measure. the researcher will compare the mean levels of each group to see if there is a statistically significant difference between the groups. which analysis would be acceptable to use?

Jonathan's mix has more grapefruit flavor since it has a higher ratio of concentrate to water.

Generally, Grapefruit flavor refers to the taste and aroma that is characteristic of grapefruit, a citrus fruit that is known for its sour and slightly bitter taste.

Grapefruit flavor can be described as a mix of sweet, tart, and bitter notes with a distinct citrus tang.

the ratios of the mixtures are 9/40 and 8/32

Therefore

8/32= 0.25

9/40 = 0.225

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ANSWER

x = 4; 5x + 1 = 21

EXPLANATION

First, we have to find the value of x using the given equation,

To do so, divide both sides by 2,

Now, with x = 4, replace it into the expression given to find its value,

Hence, the value of the expression is 21.

Answer: = 18

Espero que esto te ayude.

Answer:

Distance=Speed×Time

When speed is 40 kmph

Distance traveled by car =40×9

                                         =360 km

When speed is 60 kmph

Time taken to complete the journey =  

60

360

​  

                                                            =6 hours

Answer:

270 ÷ 6 = 45

45 x 6 = 270

45 x 9 = 405

The answer is 405

Hope it helped❤️

The surface integral of z + x^2y over the given surface S, which is the part of the cylinder y^2 + z^2 = 16 that lies between the planes x = 0 and x = 6 in the first octant, needs to be evaluated.

To evaluate the surface integral, we first parameterize the surface S using cylindrical coordinates. Let's define the parameterization as r(θ, z) = (x, y, z) = (r cosθ, r sinθ, z), where 0 ≤ θ ≤ π/2, 0 ≤ z ≤ √(16 - z^2), and 0 ≤ r ≤ 6.

Next, we compute the normal vector to the surface S, which is given by the cross product of the partial derivatives of r with respect to θ and z, i.e., (∂r/∂θ) × (∂r/∂z).

Then, we evaluate the surface integral ∬S (z + x^2y) dS by integrating the scalar field (z + x^2y) over the parameterized surface S using the dot product of the scalar field and the normal vector, and integrating with respect to θ and z over their respective ranges.

The detailed calculation involves integrating with appropriate limits and evaluating the integral expression.

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Quadrants are the four regions of the Cartesian plane that are separated by the x-axis and the y-axis. They are numbered counterclockwise starting from the positive x-axis, which is also known as the 0-degree axis. Therefore, if sec >0 and sin <0, the point lies in the fourth quadrant.

The first quadrant is where both the x and y coordinates are positive, the second quadrant is where the x coordinate is negative and the y coordinate is positive, the third quadrant is where both the x and y coordinates are negative, and the fourth quadrant is where the x coordinate is positive and the y coordinate is negative.

To determine in which quadrant a point lies based on the signs of the trigonometric functions, we can use the following rules:

If sin > 0 and cos > 0, the point lies in the first quadrant.

If sin > 0 and cos < 0, the point lies in the second quadrant.

If sin < 0 and cos < 0, the point lies in the third quadrant.

If sin < 0 and cos > 0, the point lies in the fourth quadrant.

In this case, we are given that sec > 0 and sin < 0. We know that sec is the reciprocal of cos, so sec > 0 implies that cos > 0. We also know that sin < 0, which means that the y coordinate of the point is negative.

Based on the rules above, we can conclude that the point lies in the fourth quadrant. This is because sin is negative (so the point is below the x-axis) and cos is positive (so the point is to the right of the y-axis), which is the condition for a point to lie in the fourth quadrant.

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The estimated change in yy using differentials is -0.00679. This means that if xx is increased by 0.005, then yy is estimated to decrease by 0.00679. The differential of yy is dy=-5sin(5x)dxdy=−5sin⁡(5x)dx. We are given that y=cos(5x)=π/30y=cos⁡(5x)=π/30 and x=0.055x=0.055.

We want to estimate ΔyΔy, which is the change in yy when xx is increased by 0.005. We can use the differential to estimate ΔyΔy as follows:

Δy≈dy≈dy=-5sin(5x)dx

Plugging in the values of y, x, and dxdx, we get:

Δy≈-5sin(5(0.055))(0.005)≈-0.00679

Therefore, the estimated change in yy using differentials is -0.00679.

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The slope-intercept equation of a line that passes through the points (-2,5) and (6,-4) is \(y=-\frac{9}{8}x+\frac{11}{4}\)

We know that the slope-intercept form of the line is y =  mx + c, where m is the slope of the line and c is the y-intercept of the line.

For given question we have been given two points (-2,5) and (6,-4)

We need to find the slope-intercept equation of a line that passes through the points (-2,5) and (6,-4).

Using two-point form the equation of the line is,

\(\frac{y-y_1}{y_2-y_1}=\frac{x-x_1}{x_2-x_1}\)

Let (x1, y1) = (-2,5) and (x2, y2) = (6,-4)

So, the equation of the line is,

\(\frac{y-5}{-4-5} =\frac{x-(-2)}{6-(-2)}\\\\ \frac{y-5}{-9} =\frac{x+2}{6+2}\\\\\frac{y-5}{-9} =\frac{x+2}{8}\\\\ 8(y-5)=-9(x+2)\\\\8y-40=-9x-18\\\\8y=-9x-18+40\\\\8y=-9x+22\\\\y=-\frac{9}{8}x+\frac{11}{4}\)

above equation is in the slope-intercept form.

Therefore, the slope-intercept equation of a line that passes through the points (-2,5) and (6,-4) is \(y=-\frac{9}{8}x+\frac{11}{4}\)

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Step-by-step explanation:

180 - 34 = 146

one angle is a right angle, angle across it is 146, 360 - 90 - 146 = 124

divide that by two to get the measures of the remaining two angles (62 degrees)

180 - 62 = x

118 = x

:

/ = .

-- :

, . , - , ,

Answer:

SAS Similarity

Step-by-step explanation:

44/11 =4  and 8/2 = 4   they have the proportions on two sides the third side will be congruent in the angles.  They share a point with a straight line making an angle similar in between them.
Side Angle Side I believe its SAS
(please ask an expert... I'm not sure anymore but I wanted to help....)

Sherri has 35 apps on her phone and Bill has 64 apps on his phone.

Let's represent Sherri’s apps with x.

Then, the number of Bill's apps will be x+29 (since he has 29 more apps than Sherri).

Their total number of apps is 99.Thus, the mathematical equation is:x + (x+29) = 99

Simplifying this equation gives:2x + 29 = 99

Subtracting 29 from both sides of the equation gives:2x = 70

Dividing both sides by 2 gives:x = 35

This means Sherri has 35 apps on her phone.

Substituting that into x+29 gives:35+29 = 64

Therefore, Bill has 64 apps on his phone.

Hence, each person has Sherri has 35 apps on her phone and Bill has 64 apps on his phone. The total number of apps between the two of them is 99 apps.

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The given statement is False. In hypothesis testing, we assess two theories about a population utilizing a sample of information. We begin by taking two theories, the null hypothesis, and the alternative hypothesis. The p-value of a test can be used to decide whether to decline the null hypothesis or not.

He is random sample of 100 of each type of major at graduation, he found that 65 accounting majors and 52 economics majors had 2.

The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is conducting a hypothesis test with a significance level of 0.05.

A proportion test is the suitable method to answer his inquiry. A proportion test is used to test whether the proportion of individuals who have a job offer differs significantly between accounting and economics majors.

A null and an alternative hypothesis can be used to construct a proportion test.Null hypothesis: There is no significant difference between the proportion of accounting and economics majors who have a job offer on graduation day.

Alternative hypothesis: The proportion of accounting majors who have a job offer on graduation day differs significantly from the proportion of economics majors who have a job offer on graduation day.

The hypotheses can be expressed in terms of the proportion of individuals who have a job offer on graduation day, as follows:

Null hypothesis: p1 = p2

Alternative hypothesis: p1 ≠ p2, where p1 is the proportion of accounting majors who have a job offer, and p2 is the proportion of economics majors who have a job offer.

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The sampling technique used in each study is as follows: (a) convenience sampling, (b) systematic sampling, and (c) stratified random sampling.

(a) In the first study, where a journalist goes to a campground to ask people about their feelings regarding air pollution, the sampling technique used is convenience sampling. This is evident because the journalist approaches individuals who are readily available and easily accessible at the campground. However, convenience sampling may introduce bias as it does not ensure a representative sample of the population.

(b) In the second study, where every tenth machine part is selected from an assembly line for measurement, the sampling technique used is systematic sampling. Systematic sampling involves selecting every nth element from a population after establishing a sampling interval. In this case, every tenth machine part is selected to ensure a systematic and unbiased approach to quality assurance.

(c) In the third study, where attitudes about smoking are studied at a college and students are divided by class and then randomly sampled from each class for interviews, the sampling technique used is stratified random sampling. Stratified random sampling involves dividing the population into homogeneous subgroups (strata) and then randomly selecting samples from each subgroup. By dividing the students into different class strata and randomly selecting samples from each class, this study aims to ensure representation from each class in the final sample.

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Answer:

The base

Step-by-step explanation:

Just did it

Answer:

the base (b)

Step-by-step explanation:

edg. 2021

The alternative and hull hypotheses is H₀: P=0.03, H₁: P≠0.03.

Given that,

According to a representative of the Ohio Department of Education, 3% of graduating high school seniors in Ohio have dropped out in recent years. Out of the 600 pupils enrolled, 30 students from Podunk High School dropped out of school last year.

We have to find is there enough data to say that this school's dropout rate is higher than the state average. Using symbols and words, state the alternative and hull hypotheses.

We know that,

n is 600,

3% Ohio high school seniors dropout.

30 dropout out of 600 in Podunk high school.

Here,

H₀: μ₁=μ₂  vs   H₁:μ₁≠μ₂

In coordinates,

H₀⇒ dropout number is equal for both schools.

H₁⇒ dropout number not equal for both schools.

H₀: P=0.03, H₁: P≠0.03.

Therefore, The alternative and hull hypotheses is H₀: P=0.03, H₁: P≠0.03.

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Answer:

y - 27 = 0 (x - 21) or y = 27

Step-by-step explanation:

Answer:

\(15\frac{5}{6}\)

Step-by-step explanation:

95 ÷ 6 = x

x = \(15\frac{5}{6}\)

Answer:

the amount of cupcakes

Step-by-step explanation:

you said the amount of cupcakes can be represented by

Answer:

40% but there is no article so I looked it up

Step-by-step explanation:

The final surface area of the composite figure is 3500 square feet.

We are given that;

Dimensions of rectangular prism= 25ft*50ft*14ft

Height of triangle= 8ft

Now,

Plugging in the given dimensions, we get:

The surface area of the rectangular prism is SA = 2 (25 x 50 + 50 x 14 + 25 x 14) = 4900 square feet.

The surface area of the triangular prism is SA = 25 x 8 + 50 x 8 + 50 x 5 + 25 x 5 = 1100 square feet.

Adding them together, we get:

The total surface area of the composite figure is SA = 4900 + 1100 = 6000 square feet.

However, this answer includes some areas that are not on the surface or are overlapping. We need to subtract these areas from the total surface area.

The area that is not on the surface is the base of the triangular prism, which is a rectangle with length 25 feet and width 50 feet. The area of this rectangle is A = lw = 25 x 50 = 1250 square feet.

The area that is overlapping is the top of the rectangular prism, which is also a rectangle with length 25 feet and width 50 feet. The area of this rectangle is also A = lw = 25 x 50 = 1250 square feet.

Subtracting these areas from the total surface area, we get:

SA = 6000 - 1250 - 1250 = 3500 square feet.

Therefore, by the area the answer will be 3500 square feet.

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The schedule is as follows:

T1 -> T2 -> T1 -> T3 -> T1 -> T2 -> T1.

To construct a schedule using the Earliest Deadline First (EDF) scheduling algorithm, we need to consider the execution time, period, and deadline of each task and assign them priorities based on their deadlines. The task with the earliest deadline will be scheduled first. Let's create a schedule for the given task set:

Task T1: Execution time (e) = 2 ns, Period (P) = 5 ns, Deadline (D) = 5 ns

Task T2: Execution time (e) = 4 ns, Period (P) = 7 ns, Deadline (D) = 7 ns

Task T3: Execution time (e) = 7 ns, Period (P) = 7 ns, Deadline (D) = 7 ns

We have a period of 22 ns, and we need to schedule these tasks within that period. Let's start with the task with the earliest deadline:

At time 0 ns: Execute T1 (2 ns)

At time 2 ns: Execute T2 (4 ns)

At time 6 ns: Execute T1 (2 ns)

At time 8 ns: Execute T3 (7 ns)

At time 15 ns: Execute T1 (2 ns)

At time 17 ns: Execute T2 (4 ns)

At time 21 ns: Execute T1 (2 ns)

This completes the execution of all tasks within the given period of 22 ns. The schedule is as follows:

T1 -> T2 -> T1 -> T3 -> T1 -> T2 -> T1

In this schedule, we have followed the EDF algorithm by selecting tasks based on their deadlines. The task with the earliest deadline is always scheduled first to meet the timing requirements of the system.

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Anna should multiply the prices on the tags by 0.93 to find the price she would have to pay before tax in one step.

Given that Anna has a loyalty card good for a 7% discount at her local grocery store.

We have to find the number should she multiply the prices on the tags by to find the price she would have to pay, before tax

Anna should multiply the prices on the tags by 0.93 (which is 1 minus the 7% discount) to find the price she would have to pay before tax in one step.

For example, if an item costs $10 before the discount, Anna would pay $10 x 0.93 = $9.30 after the discount.

Hence, Anna should multiply the prices on the tags by 0.93 to find the price she would have to pay before tax in one step.

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The money Andreas has left from his share of the money when he has bought the video game is £179.50.

Let the amount of money that they share be represented by the variable x.

Given that they share the money in the ratio 3:2:5, we can express their share of the money as:

Andreas' share = 3x/10

Isla's share = 2x/10

= x/5

Paulo's share = 5x/10

= x/2Also, given that the total amount of money that Isla and Paulo receive is £76 more than the amount of money that Andreas receives, we can form an equation:

x/5 + x/2 = 3x/10 + £76

Multiplying both sides by 10 to get rid of the fractions, we get: 2x + 5x = 3x + £760x = £760

Therefore, the total amount of money shared is £760.

Now that we know the total amount of money shared, we can determine how much Andreas has left after buying the video game.

We are told that Andreas buys a video game for £48.50 with some of his share of the money.

Therefore, he has £48.50 less than his share of the money left, which is:3x/10 - £48.50.

This simplifies to:(3/10)(£760) - £48.50= £228 - £48.50= £179.50

Therefore, Andreas has £179.50 left from his share of the money after buying the video game.

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It is not appropriate to use a statistical test to determine whether the mean student-to-teacher ratio is the same for the top 10 schools as it is for the bottom 10 schools because this would only compare the mean ratios of the two groups.

There are several statistical tests that can be used to determine whether the mean student-to-teacher ratio is the same for the top 10 schools as it is for the bottom 10 schools.

However, some statistical tests may not be appropriate for this scenario.

The main reason for this is that the normal distribution of data may not be assumed in this situation. This is because student-to-teacher ratios may not be normally distributed, with some schools having much higher ratios than others, resulting in skewed data.

In this scenario, a nonparametric statistical test may be more appropriate because it makes fewer assumptions about the distribution of data. The Wilcoxon rank-sum test, for example, may be used to compare the student-to-teacher ratios of the top 10 and bottom 10 schools because it does not assume normality. The Mann-Whitney U test is another nonparametric test that can be used to compare the two groups' ratios.

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Answer:

-2x - 6 < -8

Step-by-step explanation:

when the first one is smiplfid it gives us   x<−2

when the second one is smiplfid it gives us    x>1 which means it's correct because 8 is greater than 1

plz mark brainliest

Answer:

(  −∞  ,  −2  )  ∪  (  1  ,  ∞  )

Step-by-step explanation:

5x + 3 < -7  →  x  <  −2    → (  −∞  ,  −2  )  

-2x - 6 < -8  → x  >  1        →  (  1  ,  ∞  )

5x + 3 < -7 or -2x - 6 < -8 → x  <  −2  or  x  >  1 →  (  −∞  ,  −2  )  ∪  (  1  ,  ∞  )

Graph 1)   5x + 3 < -7

Graph 2)  -2x - 6 < -8

Graph 3)  5x + 3 < -7 or -2x - 6 < -8

The substantive audit sampling technique uses a statistical sampling approach is Sampling or MUS.

Sampling is a powerful tool in auditing as it allows the auditor to make conclusions about the population without having to test all the transactions, balances or data.

Substantive audit sampling refers to the use of samples in an audit process to make conclusions about a population of transactions, balances or other data.

There are three main substantive audit sampling techniques: Stratified Sampling, Attribute Sampling and Monetary Unit Sampling.

Monetary Unit Sampling or MUS is a statistical sampling approach that focuses on the monetary value of transactions.

The auditor will select a sample of transactions and calculate the expected deviation rate.

This technique is used when the auditor is focused on testing material balances and ensuring that they are correct.

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Answer:

Given,  

The ratio of the three numbers are 1:2:3 . Let the numbers are x , 2x and 3x.

According to the question,

x³+(2x)³+(3x)³=4,500  

⟹x³+8x³+27x³=4,500  

⟹36x³=4500  

⟹x³=4,50036  

⟹x³=125  

⟹x=125−−−√3  

⟹x=5  

So the numbers are 5,5×2=10,5×3=15  

Therefore, 5 is the smallest number.

https://www.quora.com/Three-numbers-are-in-the-ratio-1-2-3-and-the-sum-of-their-cubes-is-4-500-What-is-the-smallest-number

Answer: The first one, the last one,

Step-by-step explanation: